Chiral 3,4-dihydro--2h- pyran compound

The present invention relates to the use as a chiral dopant for liquid crystal system of chiral 3,4-dihydro--2H- pyran compound and its diastereomers and these compounds. Furthermore, the present invention at least one polymerizable non or polymerizable liquid crystal composition containing a chiral 3,4-dihydro -2H- pyran compounds according to the invention, the optical element of the polymerizable non or polymerizable liquid crystal composition for the manufacture, use in the printing or coating of the support of the polymerizable liquid crystal composition, dispersions and emulsions, for the manufacture of films or pigments, as well as such an optical element, printed or coated substrate body, dispersions and emulsions, film and a pigment.